Rack for warp beams and the like



Jun.l 28,21930.

` H. BAMMANN RACK FOR WARP BEAMS AND THE LIKE Filed June 22. 1927 Patented `lan. 28, 1930 UNITED STATES HEINRICH BAMMANN, OF SORAU' 1\T.-L., GERMANY RACK FOR WAR? BEAMS AND THE LIKE Application led June 22, 1927, Serial No; 200,699, and in Germany J anuary 30, 1926.

In racks for warp beams and the like having endless chains ruiming over pulleys at the top and bottom of the rack for raising and lowering the warp beams, shelves and the like, the hooks provided on the endless chains, in which the warp beams are supported have hitherto had to be locked by the attendant, for preventing the warp beams falling out, when in the bottom position. This locking operation is not only inconvenient, but is also unreliable, as the attendant may forget to lock the hooks.

According to the present invention the hooks, into which the warp beams and the like are inserted, required in warp beam racks of the kind referred to, are so constructed as to be independent of the carefulness and attention of the workman attending to the insertion of the warp beams. Vith this object in view the journals of the warp beams are placed in self-closing double hooks attached to the chains, which hooks automatically prevent the warp beams from falling out, even when the hooks are running round the lower chain pulleys.

In the accompanying drawing a construetional form of the arrangement according to the invention is shown as applied to a rack for warp beams and the like having endless chains running over pulleys at the top and bottom of the rack,

Figure l being a front elevation of the rack for warp beams,

Figure .2 is a side elevation of the rack for .varp beams looking in the direction of the arrow A, and

Figure 8 is a similar side elevation, the difference being that in place of warp beams ordinary shelves are suspended in the double hooks. Figure Ll is a detail of hook mechanism. r

The rack is constructed in a known manner, being provided with lower and upper pulleys d, over which the endless chains c run l for raising and lowering the warp beams t or shelves 7L. The upper pulleys d are fixed on the shaft c which extends right across the rack and can be rotated in -either direction for instance by means of a worm gear a operated by a chain o, so that each warp beam of each shelf can be brought to the desired height.

According to the present invention double hooks g are provided on the endless chains c for the insertion of the warp beams or shelves, which double hooks close automatis cally, when running over the upper or lower pulleys d, so that, even when the warp beam or the shelf is in its lowest position, it is impossible for it to fall out of the double hooks. The new arrangement has this advantage over the known types of hooks, that the securing of the warp beams or shelves so that they cannot fall out is no longer dependent on the carefulness of the attendants'. In other words, by reference to Fig. 4 of the drawings, which shows the hooks g in detail, it will be observed that at intervals along the length of the chains e the adjacent ends of adjacent links are provided with the crossed hook formations g which extend outwardly and towards one another, forming in effect ar pair of tongs the free ends of which, when the chain is straight, as when traveling between the pulleys or sprockets wheels CZ, are spaced sufliciently to permit the ends of the warp beams or shelves to be engaged between said formations. Thus, when any pair of links having the hook formations g passes around the lower pulley or sprocket CZ, the resulting pivotal movement imparted to the links causes the free ends of the hook formations to approach one another, thereby lessening the distance between the free ends of said hooks so that the warp beam or shelf end portions engaged between the hooks cannot fall therefrom.

lVhat I claim is In a device of the character described, a pair of vertically spaced pulleys, an endless chain including a plurality of links trained over said pulleys, hooks provided on one end only of adjacent links of said chain, respectively, said hooks being arranged in crossed rela-tion and having their free ends extending 9 towards one another in spaced relation whereby when the chain is straight, as when travelling between said pulleys, the free ends of said hooks are disposed a predetermined dis* tance apart, and whereby, when the links provided with said hooks pass around said pulleys, the resulting relative pivotal move ment imparted to the links causes the free ends of said hooks to approach one another.

In testimony whereof I have affixed my sigP` nature.

HEINRICH BAMMANN. 

